Struct State 

pub struct State { /* private fields */ }

Application state container for type-safe dependency injection and data sharing.

State provides a thread-safe way to store and retrieve shared data across the entire application. It uses TypeId as keys to ensure type safety.

Implementations

impl State

pub fn new() -> Self

Creates an empty shared state container.

pub fn get<T>(&self) -> Result<T, DependencyInjectionError>

where T: Clone + Send + Sync + 'static,

Extract a clone of the stored value of type T from the state.

Errors

Returns an error if no value of type T has been registered in the state. This usually indicates that the dependency was never inserted or was expected to be provided by a module/provider that was not registered.

pub fn borrow<T>(&self) -> Result<Arc<T>, DependencyInjectionError>

where T: Send + Sync + 'static,

Borrow an Arc to the stored value of type T from the state. This returns an Arc<T> without cloning the underlying value.

Errors

Returns an error if no value of type T has been registered in the state or if the stored value cannot be downcast back to T.

pub fn insert<T: Send + Sync + 'static>(&self, state: T)

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for State

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for State

fn default() -> Self

Returns the “default value” for a type.